Figure 1From: The current position of surgical lung biopsy in the diagnosis of idiopathic pulmonary fibrosisHistopathological findings of a surgical lung biopsy sample. A. An image showing histological features of usual interstitial pneumonia (UIP) including dense fibrosis, fibroblast foci (arrows) and only a few nearly normal looking alveolar walls (on the middle). B. Fibroblast foci (arrows) are seen at higher magnification. Haematoxylin-eosin (HE) stain.Back to article page